>> weather -l "poznan"

Select a location:
1 City: Poznan, State: Greater Poland Voivodeship, Country: PL
2 City: Poznan, State: Rivne Oblast, Country: UA
3 City: Poznan, State: Lublin Voivodeship, Country: PL 

>> (1)

Current weather in: Poznan, PL
Clear, 13.7 degrees

weather -l "LOCATION" -t 'TYPE' -u 'UNITS'

-l (req) -> place to show forecast for, ex: "London"

-t       -> type of forecast:
            'c' : current (def)
            'd' : daily
            'w' : weekly
            'm' : monthly

-u        -> units:
            'm' : metric (def)
            'i' : imperial

Use weather --help for more info